[1] Univ Calif Los Angeles, Sch Med, Dept Mol & Med Pharmacol, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Sch Med, Dept Pediat, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Sch Med, Dept Neurol, Los Angeles, CA 90095 USA
[4] Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland
[5] Burnham Inst, La Jolla, CA 92037 USA
[6] Stanford Univ, Sch Med, Dept Pathol, Stanford, CA 94305 USA
[7] Stanford Univ, Sch Med, Dept Dev Biol, Stanford, CA 94305 USA
[8] Univ Calif Los Angeles, Sch Med, Interdepartmental Program Neurosci, Los Angeles, CA 90095 USA